Final answer:
William Langland is most associated with the poem Piers Plowman, which reflects the social conditions of the 14th century. This is distinct from the works of Alfred Lord Tennyson and William Wordsworth, who wrote 'The Lady of Shalott' and 'The Last of the Flock' respectively.
Step-by-step explanation:
The name most associated with the poem Piers Plowman is William Langland. Piers Plowman is a Middle English allegorical narrative poem and its authorship is attributed to Langland, who is believed to have lived during the 14th century. His work is a reflection of the societal conditions of his time, depicting the struggle between a life of spiritual health versus the temptations of earthly riches.
While Alfred Lord Tennyson and William Wordsworth are also renowned poets, they are not related to Piers Plowman. Tennyson's famous poem is 'The Lady of Shalott' and among Wordsworth's works are 'The Pedlar' and 'The Last of the Flock', which clearly show his sympathy with the poor and his influence on the Romantic tradition.